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linux/drivers/vdpa/vdpa_user
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Linfeng Sun 48a4ee65e6 vduse: return compat ioctl results directly 
The compat handler handles VDUSE_IOTLB_GET_FD and VDUSE_VQ_GET_INFO, but
then calls the native handler. Their different command sizes make native
dispatch return -ENOIOCTLCMD.

For GET_FD, this overwrites receive_fd()'s return value after the
descriptor is installed, leaking one fd per call. Return handled compat
results directly and use native dispatch only for other commands.

Fixes: 455a2a1af9 ("vduse: fix compat handling for VDUSE_IOTLB_GET_FD/VDUSE_VQ_GET_INFO")
Signed-off-by: Linfeng Sun <linfeng.sun.dev@gmail.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Message-ID: <20260908-fix-vduse_dev_compat_ioctl-v1-1-62264d9bfb8d@gmail.com>
2026-09-08 03:58:27 -04:00
..
iova_domain.c vhost_iotlb: bound map allocation in add_range 2026-08-03 15:21:54 -04:00
iova_domain.h vduse: take out allocations from vduse_dev_alloc_coherent 2026-01-28 15:32:17 -05:00
Makefile
vduse_dev.c vduse: return compat ioctl results directly 2026-09-08 03:58:27 -04:00